US2024184844A1PendingUtilityA1
Method and system for predicting heat exchanger performance, electronic device and storage medium
Assignee: UNIV CHINA PETROLEUM EAST CHINAPriority: Oct 19, 2022Filed: Oct 19, 2023Published: Jun 6, 2024
Est. expiryOct 19, 2042(~16.2 yrs left)· nominal 20-yr term from priority
G06F 17/11G01N 25/18F28F 2200/00
48
PatentIndex Score
0
Cited by
0
References
0
Claims
Abstract
A method and system for predicting heat exchanger performance, an electronic device and a storage medium are provided. The method comprises: acquiring a flow unit of the heat exchanger and constructing a physical model of the flow unit according to structural parameters of the heat exchanger; constructing a coupled model of an interphase transfer mechanism for oil-gas-water three-phase flow using computational fluid dynamics according to the physical model; constructing a fully coupled population balance model for flow and heat transfer of oil-gas-water three-phase flow; solving the fully coupled population balance model to obtain a model calculation result and determining a Nusselt number and a Fanning friction factor; and determining a comprehensive heat transfer factor, wherein the comprehensive heat transfer factor is used to evaluate heat transfer performance of the heat exchanger.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A method for predicting heat exchanger performance, comprising:
acquiring a flow unit of a heat exchanger and constructing a physical model of the flow unit according to structural parameters of the heat exchanger; constructing a coupled model of an interphase transfer mechanism for oil-gas-water three-phase flow using computational fluid dynamics according to the physical model; wherein the coupled model of the interphase transfer mechanism for oil-gas-water three-phase flow comprises an interphase mass transfer model, an interphase momentum transfer model and an interphase energy transfer model; constructing a fully coupled population balance model for flow and heat transfer of oil-gas-water three-phase flow according to the coupled model of the interphase transfer mechanism for oil-gas-water three-phase flow; wherein the fully coupled population balance model comprises an Euler multi-fluid model, a water-phase standard k-epsilon turbulence model, and a bubble/oil droplet zero-equation model; solving the fully coupled population balance model to obtain a model calculation result and determining a Nusselt number and a Fanning friction factor according to the model calculation result; and determining a comprehensive heat transfer factor according to the Nusselt number and the Fanning friction factor, wherein the comprehensive heat transfer factor is used to evaluate heat transfer performance of the heat exchanger.
2 . The method according to claim 1 , wherein an expression of the interphase momentum transfer model is:
F l =F lg =−F gl
where F l is a total interphase force of water phase, F gl is a interphase force acting on a gas phase in a water phase, and F lg is a interphase force acting on a water phase in a gas phase.
3 . The method according to claim 1 , wherein an expression of the interphase energy transfer model is:
Q
˙
o
,
1
=
h
S
,
o
a
o
(
T
o
-
T
w
)
α
o
Q
˙
g
,
1
=
h
S
,
g
a
g
(
T
g
-
T
w
)
α
g
where {dot over (Q)} o,l is heat transferred from a water-phase interface to an oil-phase interface, {dot over (Q)} g,l is heat transferred from a water-phase interface to an gas-phase interface, h S,o is an oil-phase interface transfer coefficient, a o is an interface area per unit volume of an oil phase, T o is an oil-phase temperature, T W is a water-phase temperature, h S,g is a gas-phase interface transfer coefficient, a g is an interface area per unit volume of a gas phase, T g is a gas-phase temperature, α g is a gas-phase volume fraction, α o is an oil-phase volume fraction.
4 . The method according to claim 1 , wherein an expression of the Fanning friction factor is:
F
=
Δ
p
×
D
h
2
×
L
×
ρ
×
v
2
where F is the Fanning friction factor, Δp is a pressure difference between an inlet and an outlet, D h is a hydraulic diameter, L is a channel length, ν is a flow velocity, and ρ is a density.
5 . The method according to claim 1 , wherein an expression of the comprehensive heat exchange factor is:
PEF =( Nu/Nu 0 )/( F/F 0 ) 1/3 where PEF is the comprehensive heat exchange factor, Nu is a global Nusselt number, Nu 0 is a global Nusselt number under a standard condition, F is the Fanning friction factor, and F 0 is a Fanning friction factor under the standard condition.
6 . The method according to claim 1 , wherein after the determining a comprehensive heat transfer factor according to the Nusselt number and the Fanning friction factor, the method further comprises:
determining optimization parameters of the heat exchanger according to a plurality of comprehensive heat exchange factors; wherein the optimization parameters comprise a corrugation height, a corrugation interval and a corrugation inclination angle.
7 . A system for predicting heat exchanger performance, comprising:
an acquiring module, configured to acquire a flow unit of a heat exchanger and construct a physical model of the flow unit according to structural parameters of the heat exchanger; a module of constructing a coupled model of an interphase transfer mechanism for oil-gas-water three-phase flow, configured to construct the coupled model of the interphase transfer mechanism for oil-gas-water three-phase flow using computational fluid dynamics according to the physical model; wherein the coupled model of the interphase transfer mechanism for oil-gas-water three-phase flow comprises an interphase mass transfer model, an interphase momentum transfer model and an interphase energy transfer model; a module of constructing a fully coupled population balance model, configured to construct the fully coupled population balance model for flow and heat transfer of oil-gas-water three-phase flow according to the coupled model of the interphase transfer mechanism for oil-gas-water three-phase flow; wherein the fully coupled population balance model comprises an Euler multi-fluid model, a water-phase standard k-epsilon turbulence model, and a bubble/oil droplet zero-equation model; a solving module, configured to solve the fully coupled population balance model to obtain a model calculation result and determine a Nusselt number and a Fanning friction factor according to the model calculation result; and a comprehensive heat transfer factor determining module, configured to determine a comprehensive heat exchange factor according to the Nusselt number and the Fanning friction factor, wherein the comprehensive heat transfer factor is used to evaluate heat transfer performance of the heat exchanger.
8 . The system according to claim 7 , wherein an expression of the interphase momentum transfer model is:
F l =F lg =−F gl
where F l is a total interphase force of water phase, F gl is a interphase force acting on a gas phase in a water phase, and F lg is a interphase force acting on a water phase in a gas phase.
9 . An electronic device, comprising:
one or more processors; and a storage device on which one or more programs are stored; wherein the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the method according to claim 1 .
10 . The electronic device according to claim 9 , wherein an expression of the interphase momentum transfer model is:
F l =F lg =−F gl
where F l is a total interphase force of water phase, F gl is a interphase force acting on a gas phase in a water phase, and F lg is a interphase force acting on a water phase in a gas phase.
11 . The electronic device according to claim 9 , wherein an expression of the interphase energy transfer model is:
Q
˙
o
,
1
=
h
S
,
o
a
o
(
T
o
-
T
w
)
α
o
Q
˙
g
,
1
=
h
S
,
g
a
g
(
T
g
-
T
w
)
α
g
where {dot over (Q)} o,l is heat transferred from a water-phase interface to an oil-phase interface, {dot over (Q)} g,l is heat transferred from a water-phase interface to an gas-phase interface, h S,o is an oil-phase interface transfer coefficient, a o is an interface area per unit volume of an oil phase, T o is an oil-phase temperature, T W is a water-phase temperature, h S,g is a gas-phase interface transfer coefficient, a g is an interface area per unit volume of a gas phase, T g is a gas-phase temperature, α g is a gas-phase volume fraction, α o is an oil-phase volume fraction.
12 . The electronic device according to claim 9 , wherein an expression of the Fanning friction factor is:
F
=
Δ
p
×
D
h
2
×
L
×
ρ
×
v
2
where F is the Fanning friction factor, Δp is a pressure difference between an inlet and an outlet, D h is a hydraulic diameter, L is a channel length, ν is a flow velocity, and ρ is a density.
13 . The electronic device according to claim 9 , wherein an expression of the comprehensive heat exchange factor is:
where PEF=(Nu/Nu 0 )/(F/F 0 ) 1/3 is the comprehensive heat exchange factor, Nu is a global Nusselt number, Nu 0 is a global Nusselt number under a standard condition, F is the Fanning friction factor, and F 0 is a Fanning friction factor under the standard condition.
14 . The electronic device according to claim 9 , wherein after the determining a comprehensive heat transfer factor according to the Nusselt number and the Fanning friction factor, the method further comprises:
determining optimization parameters of the heat exchanger according to a plurality of comprehensive heat exchange factors; wherein the optimization parameters comprise a corrugation height, a corrugation interval and a corrugation inclination angle.
15 . A computer storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the method according to claim 1 .
16 . The computer storage medium according to claim 15 , wherein an expression of the interphase momentum transfer model is:
F l =F lg =−F gl
where F l is a total interphase force of water phase, F gl is a interphase force acting on a gas phase in a water phase, and F lg is a interphase force acting on a water phase in a gas phase.
17 . The computer storage medium according to claim 15 , wherein an expression of the interphase energy transfer model is:
Q
˙
o
,
1
=
h
S
,
o
a
o
(
T
o
-
T
w
)
α
o
Q
˙
g
,
1
=
h
S
,
g
a
g
(
T
g
-
T
w
)
α
g
where {dot over (Q)} o,l is heat transferred from a water-phase interface to an oil-phase interface, {dot over (Q)} g,l is heat transferred from a water-phase interface to an gas-phase interface, h S,o is an oil-phase interface transfer coefficient, a o is an interface area per unit volume of an oil phase, T o is an oil-phase temperature, T W is a water-phase temperature, S,g is a gas-phase interface transfer coefficient, a g is an interface area per unit volume of a gas phase, T g is a gas-phase temperature, α g is a gas-phase volume fraction, α o is an oil-phase volume fraction.
18 . The computer storage medium according to claim 15 , wherein an expression of the Fanning friction factor is:
F
=
Δ
p
×
D
h
2
×
L
×
ρ
×
v
2
where F is the Fanning friction factor, Δp is a pressure difference between an inlet and an outlet, D h is a hydraulic diameter, L is a channel length, ν is a flow velocity, and ρ is a density.
19 . The computer storage medium according to claim 15 , wherein an expression of the comprehensive heat exchange factor is:
PEF =( Nu/Nu 0 )/( F/F 0 ) 1/3 where PEF is the comprehensive heat exchange factor, Nu is a global Nusselt number, Nu 0 is a global Nusselt number under a standard condition, F is the Fanning friction factor, and F 0 is a Fanning friction factor under the standard condition.
20 . The computer storage medium according to claim 15 , wherein after the determining a comprehensive heat transfer factor according to the Nusselt number and the Fanning friction factor, the method further comprises:
determining optimization parameters of the heat exchanger according to a plurality of comprehensive heat exchange factors; wherein the optimization parameters comprise a corrugation height, a corrugation interval and a corrugation inclination angle.Join the waitlist — get patent alerts
Track US2024184844A1 — get alerts on status changes and closely related new filings.
We store only your email — no account needed. See our privacy policy.